In the word ACCUMUATES, if the 1st letter is interchanged with 2nd, 3rd with 4th, 5th with 6th, 7th with 8th and 9th with the 10th, then the 6th letter from the left will be
The weights of 4 boxes are 20, 40, 50 and 30 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?